Posts Tagged ‘Side’

Dark areas on left and right side of projection screen. Why?

by Adam Melancon

Question by BWANA: Dark areas on left and right side of projection screen. Why?
I have had a TV projection home theater system for over 15 years. A few years ago I changed the projector to a Panasonic PT-AX100U, which I love. It’s a great projector and throws a wonderful image.

I was given a given a Blu-ray Player for Christmas, and as a result, am now projecting in 16:9 as opposed to the 4:3 it has always been in the past. Whether the image is coming from the Blu-ray Player (HDMI) or my DVD Player (Component) the results are the same. The wide image on the screen NOW has a “very slight” dark band with a sharply defined edge, on the extreme right and left sides of the projected image. It’s like those sides are down in exposure just slightly. It is especially noticeable when the screen is filled with a lighter image like a sky or lots of white or other light colors.

Since I’m rather a perfectionist, it bothers me. Could it be the projector “bulb”, or what? It is NOT the screen, especially when you consider the image has ALWAYS filled the screen from right to left over the years.
I found out from Panasonic that they believe it’s the internal “panel”.
“This would refer to the LCD panel that provides the image that’s projected. The panel will age over time and eventually would need to be replaced. If the unit is used with a 4:3 image, the edges that are dark will not age at the same rate as the center. This would only be noticed when a full screen image is displayed.”
Seems like that’s the problem to me. Time will tell.
I found out from Panasonic that they believe it’s the internal “panel”.
“This would refer to the LCD panel that provides the image that’s projected. The panel will age over time and eventually would need to be replaced. If the unit is used with a 4:3 image, the edges that are dark will not age at the same rate as the center. This would only be noticed when a full screen image is displayed.”
Seems like that’s the problem to me. Time will tell.

Best answer:

Answer by Kevin L
It sounds to me like the same issue I had on my projector, although mine was a Dlp yours is i believe is a lcd. Mine was not fixable with out spending a huge amount which it was not worth doing. Now I would suggestion trying a new bulb hoping that’s the issue, but it could be whats called the ballast. This is the chamber that the light from the lamp transmits the light through and redirects the light through prisms and mirrors. The mirrors or prisms can shift or move because with amount of heat generated from the bulb can cause the glues that hold them in place.

Hopefully that’s not the issue or yours is easily replaceable and less costly.

Good luck
Kevin

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Hitachi CP-A52 XGA 2,000 Lumens Ultra Short Throw Projector with Side Mounted Hybrid Filter

• 2,000 ANSI Lumens
• Native XGA Resolution
• Ultra-short throw capabilities eliminate the worry of obstructing the projected image by standing in front of the screen.
• Perfect Fit allows the user to adjust each corner of the image horizontally and vertically to fit any screen.
• Side Mounted Hybrid Filter provides users with a lower cost of ownership by offering easier and less frequent maintenance. (2,000 hours between maintenance.)

Product Description
Boasting ultra-short throw capabilities and easy maintenance, the Hitachi CP-A52 3LCD projector addresses a variety of needs for the education market. With an ability to project an 80-inch image from a distance 25 inches, teachers no longer have to worry about obstructing the projected image by standing in front of the screen. Additionally, there are no shadows interfering with the image and no light in the presenters face. In terms of performance, the CP-A52 is the ideal option for schools and universities, offering a brightness of 2,000 ANSI lumens and XGA resolution. The CP-A52 also contains features that address the issue of convenience. For example, the projectors hybrid filter only requires maintenance every 2,000 hours, while the lamp door is located on the top of the model, making lamp replacement a simple process, even when the projector is ceiling mounted. The CP-A52 offers Hitachis Perfect Fit functionality, allowing the user to adjust each corner of the image horizontally and vertically to fit any screen. Additionally, the Template Function projects lines onto the screen, making it easier to write on a whiteboard or blackboard. The CP-A52 also saves energy with functions such as Audio Pass Through, in which audio can be output in standby mode, saving lamp life when the presenter only needs sound. Plus, the projectors Saving Mode reduces power consumption to less than 5W by disabling RS-232C control except power-on command, monitor-out and audio capability. Moreover, the CP-A52 is easy to use, featuring advanced connectivity and proprietary Hitachi functions including My Buttons, Input Source Naming and My Text, while the projectors Closed Captioning functionality enables even more effective communication. The CP-A52 also addresses the issue of security with functions such as multilevel PIN locks, a security bar and a Kensington slot.

Hitachi CP-A52 XGA 2,000 Lumens Ultra Short Throw Projector with Side Mounted Hybrid Filter

Hitachi CP-A52 XGA 2,000 Lumens Ultra Short Throw Projector with Side Mounted Hybrid Filter

• 2,000 ANSI Lumens
• Native XGA Resolution
• Ultra-short throw capabilities eliminate the worry of obstructing the projected image by standing in front of the screen.
• Perfect Fit allows the user to adjust each corner of the image horizontally and vertically to fit any screen.
• Side Mounted Hybrid Filter provides users with a lower cost of ownership by offering easier and less frequent maintenance. (2,000 hours between maintenance.)

Product Description
Boasting ultra-short throw capabilities and easy maintenance, the Hitachi CP-A52 3LCD projector addresses a variety of needs for the education market. With an ability to project an 80-inch image from a distance 25 inches, teachers no longer have to worry about obstructing the projected image by standing in front of the screen. Additionally, there are no shadows interfering with the image and no light in the presenters face. In terms of performance, the CP-A52 is the ideal option for schools and universities, offering a brightness of 2,000 ANSI lumens and XGA resolution. The CP-A52 also contains features that address the issue of convenience. For example, the projectors hybrid filter only requires maintenance every 2,000 hours, while the lamp door is located on the top of the model, making lamp replacement a simple process, even when the projector is ceiling mounted. The CP-A52 offers Hitachis Perfect Fit functionality, allowing the user to adjust each corner of the image horizontally and vertically to fit any screen. Additionally, the Template Function projects lines onto the screen, making it easier to write on a whiteboard or blackboard. The CP-A52 also saves energy with functions such as Audio Pass Through, in which audio can be output in standby mode, saving lamp life when the presenter only needs sound. Plus, the projectors Saving Mode reduces power consumption to less than 5W by disabling RS-232C control except power-on command, monitor-out and audio capability. Moreover, the CP-A52 is easy to use, featuring advanced connectivity and proprietary Hitachi functions including My Buttons, Input Source Naming and My Text, while the projectors Closed Captioning functionality enables even more effective communication. The CP-A52 also addresses the issue of security with functions such as multilevel PIN locks, a security bar and a Kensington slot.

Hitachi CP-A52 XGA 2,000 Lumens Ultra Short Throw Projector with Side Mounted Hybrid Filter